Taser had 'little effect' on vicious dogs

Taser shocks had little effect on three vicious dogs that mauled a police officer and a couple in western Sydney.

A 48-year-old man suffered multiple severe bite wounds to both arms and legs while his partner, 43, was bitten on the leg and hip when they were attacked by their neighbour's dogs on arriving home in Penrith on Wednesday night.

A police officer who rushed to the Parker Street scene suffered a dislocated shoulder and deep bite to her leg after two of the dogs knocked her to the ground.

Inspector Kylie Koenig from Penrith Local Area Command said the officer's leg wound went through to the bone and that she would need surgery.

"There was a young child that was present at the time," Insp Koenig told reporters on Thursday.

"It was quite a traumatic incident for all.

"They were extremely vicious dogs that required police to utilise OC spray numerous times and even resort to the use of a Taser, which had very little effect."